These days, some readers give me a message feedback a special situation, said that sometimes access to Google.com, the browser will automatically go to google.cn, some people wonder whether Google intends to formally use google.cn in China instead of google.com.
When I heard the news, I verified it at the first time, and did not automatically go to google.cn after accessing Google.com, so I suspect a network DNS resolution error or a temporary test by Google on the server side.
If anyone else encounters this situation, test with the following method to further infer where the problem is.
Run cmd, then run Ping WWW.GOOGLE.COM, and look at the current GOOGLE IP address.
Then visit the IP address query site, such as 123cha, online check Google's IP address, compare the IP address is the same.
Normally it should be the same, if the two are exactly the same, and access to Google has automatically turned, the reason is on the Google server side, it may be Google on the server to do some kind of test work, or the router side of the HTTP hijack.
If not the same, that the local access to Google's line by the telecommunications or netcom and other services to hijack. The solution to this problem is to set the following figure in IE, and then select a secure DNS server in the DNS settings (for example, OpenDNS's DNS IP address: 208.67.222.222,208.67.220.220).
Of course, you can also modify the C:\WINNT\system32\drivers\etc\hosts file directly, join a line 216.239.63.104 www.google.com can also solve the problem of DNS errors.
However, there may be a telecommunications router hijacked, through the router, the IP address, etc. will not be abnormal, but the HTTP return package will be tampered with, before the telecommunications do these are to pop-up malicious Web site ads, this technology can also do to the a site automatically to the B site function.
